Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | $ 3,661 | $ 3,458 | |
| Less: Accumulated depreciation and amortization | (2,473) | (2,041) | |
| Property and equipment, net | 1,188 | 1,417 | |
| Depreciation expense | $ 431 | 451 | $ 624 |
| Furniture and fixtures | |||
| Property, Plant and Equipment [Line Items] | |||
| Estimated Useful Lives | 5 years | ||
| Property and equipment, gross | $ 960 | 960 | |
| Computers, software and equipment | |||
| Property, Plant and Equipment [Line Items] | |||
| Estimated Useful Lives | 3 years | ||
| Property and equipment, gross | $ 1,423 | 1,220 | |
| Leasehold improvements | |||
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | $ 1,278 | $ 1,278 | |